CN202960513U - Blowtorch for peak expiratory flow rate measuring device - Google Patents
Blowtorch for peak expiratory flow rate measuring device Download PDFInfo
- Publication number
- CN202960513U CN202960513U CN 201220290544 CN201220290544U CN202960513U CN 202960513 U CN202960513 U CN 202960513U CN 201220290544 CN201220290544 CN 201220290544 CN 201220290544 U CN201220290544 U CN 201220290544U CN 202960513 U CN202960513 U CN 202960513U
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- CN
- China
- Prior art keywords
- blowpipe
- blow nozzle
- measuring device
- blow gun
- flow velocity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a blowtorch for a peak expiratory flow rate measuring device. The blowtorch comprises a blowtube including both a round tube main body used for mounting and an elliptical blow nozzle formed on the round tube main body. According to the utility model, the elliptical blow nozzle is very suitable for the blowing state of people, so that air leakage caused by a mismatched blow nozzle shape is prevented, and the accuracy in measuring the peak expiratory flow rate is improved. In addition, as the outer edge of the port of the blow nozzle is designed into a round and smooth arc-shaped edge, the lip of a user using the blowtorch is protected against injury. The blow nozzle taking the shape of a hyperbolic curve can reduce ventilation resistance to increase the measurement accuracy. The sectional area of the port of the blow nozzle is 225 mm<2>, so that the user can more comfortably take the blow nozzle in the mouth, the mouth of the user is in close connection with the blow nozzle, and accordingly, air leakage is avoided in the blowing process. Moreover, in order to control the rate of air flowing out of the round tube main body, the only requirement is to control the sectional area of the bottom surface.
Description
Technical field:
This utility model relates to the medical product field, refers in particular to a kind of blowpipe of expiration peak flow velocity measuring device of simple in structure, the gas leakage that can prevent from exhaling.
Background technology:
The Peak Flow Rate that respiratory system disease patient need to measure exhales in diagnosis and therapeutic process so that the early prevention of disease and standard treatment, thereby the expiration peak flow velocity measuring device of the Peak Flow Rate of respiratory system disease patient expiration occurs being used for measuring.
Traditional expiration peak flow velocity measuring device generally comprises shell, be socketed on the link on shell and be socketed on blowpipe on link.One driving device also is installed, the scale that a slide block is installed on described shell and is used for observing measurement data on described link.
The blowpipe of traditional expiration peak flow velocity measuring device is all generally to comprise that drawing together one is used for the pipe body of installing and takes shape in rounded blow gun on the pipe body.Because blow gun is rounded, the state when it is not suitable for the user air blowing causes being easy to gas leakage, makes the result of test not accurate enough.
The utility model content:
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of blowpipe of expiration peak flow velocity measuring device of simple in structure, the gas leakage that can prevent from exhaling is provided.
In order to solve the problems of the technologies described above, this utility model has adopted following technical proposals: the blowpipe of expiration peak flow velocity measuring device, comprise a blowpipe, and described blowpipe comprises that one is used for the pipe body of installing and the blow gun that takes shape in the ovalize on the pipe body.
Furthermore, in technique scheme, the outward flange of described blow gun port is set to round and smooth curved edge.
Furthermore, in technique scheme, the area of section of described blow gun port is 225mm
2
Furthermore, in technique scheme, described pipe body side is provided with one and is used for firm card convex of installing.
Furthermore, in technique scheme, described blowpipe has a cavity, and this cavity comprises in the first rounded cavity of pipe body and blow gun that this first cavity is connected with the second cavity by the second cavity of elliptical gradient circular institute molding.
Furthermore, in technique scheme, described blow gun cross-sectional shape is hyperbola, and this blow gun comprises first surface and second curved surface of two different curvature.
After adopting technique scheme, this utility model has following beneficial effect compared with prior art:
1, in this utility model, blowpipe is made of pipe body and the blow gun that takes shape in the ovalize on the pipe body, state when the very suitable human body of the blow gun of its ovalize is blown, avoided not mating because of the blow gun shape situation that produces gas leakage, increased the accuracy of expiration peak measurement of rate of flow.In addition, the outward flange of blow gun port is set to round and smooth curved edge, and it hurts lip in the time of can avoiding user to use.
2, because the blow gun cross-sectional shape is hyperbola, it can reduce flowing resistance, to increase the accuracy of measuring.The area of section of blow gun port is 225mm
2The blow gun of this spline structure can allow user contain more comfily blow gun, also can make the mouth of user closely be connected with blow gun, and is air tight during air blowing.In addition, this utility model area of section that only need to control bottom surface processed just can be controlled from the speed of pipe body effluent air.
Description of drawings:
Fig. 1 is axonometric chart of the present utility model;
Fig. 2 is partial sectional view of the present utility model;
Fig. 3 is that gas flow is through schematic diagram of the present utility model;
Fig. 4 is the axonometric chart that this utility model coordinates expiration peak flow velocity measuring device installation;
Fig. 5 is the axonometric chart that this utility model coordinates another visual angle of expiration peak flow velocity measuring device installation;
Fig. 6 is the three-dimensional exploded view that this utility model coordinates expiration peak flow velocity measuring device installation;
Fig. 7 is the axonometric chart of link in expiration peak flow velocity measuring device;
Description of reference numerals:
1 blowpipe 11 pipe body 111 card convex 12 blow guns
120 port one 21 curved edge 122 first surface 123 second curved surfaces
2 shell 20 port 201 draw-in groove 21 slide rails
22 scale plate 221 groove 222 numerical value 23 pores
24 axis body 3 link 31 body 311 air-vents
312 installing hole 32 bulge loop 321 draw-in groove 33 flanges
34 glued membrane 4 driving device 41 driving spring 411 limiting sections
42 shell fragment 421 through hole 5 defecator 51 filter paper
The 52 sealed seat of closure 521 522 upper shield 523 lock rings
6 slide blocks
The specific embodiment:
Below in conjunction with specific embodiments and the drawings, this utility model is further illustrated.
As shown in Figure 1, the blowpipe of expiration peak flow velocity measuring device, it comprises a blowpipe 1, described blowpipe 1 comprises that one is used for the pipe body 11 of installing and the blow gun 12 that takes shape in the ovalize on pipe body 11.
The outward flange of described blow gun 12 port ones 20 is set to round and smooth curved edge 121.Described pipe body 11 sides are provided with one and are used for firm card convex 111 of installing.
Described blowpipe 1 has a cavity, and this cavity comprises in the first rounded cavity of pipe body 11 and blow gun 12 that this first cavity is connected with the second cavity by the second cavity of elliptical gradient circular institute molding.
The area of section of blow gun 12 port ones 20 is 225mm
2The blow gun 12 of this spline structure can allow user contain more comfily blow gun 12, also can make the mouth of user closely be connected with blow gun 12, and is air tight during air blowing.
See shown in Fig. 2-3, described blow gun 12 top port 120 are oval, and the bottom is circular, and namely these blow gun 12 profiles are hyperbolies, and it can reduce flowing resistance, to increase the accuracy of measuring.Described blow gun 12 has first surface 122 and second curved surface 123 of two different curvature, and the radius of curvature of establishing first surface 122 is x, and the radius of curvature of establishing the second curved surface 123 is y, according to following formula:
x
2/43-y
2/867＝1
x
2/121-y
2/5903＝1
Calculate x ≈ 13.2645, y ≈ 51.7741
The curvature of first surface 122 is that radius of curvature is the inverse of x, and namely the curvature of first surface 122 is 1/x ≈ 0.07539.
The curvature of the second curved surface 123 is that radius of curvature is the inverse of y, and namely the curvature of the second curved surface 123 is 1/y ≈ 0.01932.
If the area of section of blow gun 12 top port 120 is S1, the area of section of its bottom surface is S2; When user was blown, gas flow was A1, and speed is V1; Gas flow flows out from pipe body 11 after this utility model, and at this moment, gas flow is A1, and speed is V1, and according to formula: flow A=speed V* area of section S draws:
A1＝V1*S1，A2＝V2*S2
In addition, because the flow of the gas of the present utility model of flowing through remains unchanged, i.e. A1=A2,
So, draw: V1/V2=S2/S1, namely draw according to hydrodynamics: area of section S and speed V are inverse ratio, namely in the situation that its expiration speed V1 is certain, the area of section of bottom surface is that the area of section of S2 and top port 120 is that the ratio of S1 is larger, and its speed V2 from pipe body 11 effluent airs is less.Thereby the area of section that can be S2 and top port 120 according to the area of section of controlling the bottom surface is the ratio of S1, to control the speed V2 from pipe body 11 effluent airs.In addition, the area of section due to blow gun 12 port ones 20 is 225mm
2The blow gun 12 of this spline structure can allow user contain more comfily blow gun 12, also can make the mouth of user closely be connected with blow gun 12, and is air tight during air blowing.In this, only need the area of section S2 that controls bottom surface processed just can control from the speed V2 of pipe body 11 effluent airs.
When this utility model uses, see shown in Fig. 4-7, above-mentioned blowpipe 1 is installed on expiration peak flow velocity measuring device, and the peak flow velocity measuring device of wherein exhaling comprises: a shell 2, the scale plate 22 that is provided with a slide rail 21 and is positioned at slide rail 21 sides on this shell 2; One link 3, this link 3 removably is socketed on body 2; One driving device 4, this driving device 4 comprise the driving spring 41 that is installed on link 3 and the shell fragment 42 that is connected in driving spring 41 ends, and this shell fragment 42 falls into the inner chamber of described shell 2; One defecator 5, this defecator 5 comprise the filter paper 51 that is installed in link 3 and are used for the fixedly closure 52 of filter paper 51; Be movably installed with a slide block 6 on described slide rail 21, this slide block 6 is interfered with shell fragment 42 formation in driving device 4.
Particularly, port 20 places of described shell 2 are provided with a draw-in groove 201, shell 2 bottoms are provided with several pores 23, also be provided with an axis body 24 in this shell 2, this axis body 24 passes the installing hole 312 of through hole 421, driving spring 41 and the link 3 of described shell fragment 42, and fixing with described closure 52.Described scale plate 22 comprises by the groove 221 that broaches the lines printing and the numerical value 222 corresponding with groove 221.
The flange 33 that described link 3 comprises a body 31, takes shape in the bulge loop 32 on body 31 and take shape in body 31 sides; Also be provided with several air-vents 311 and an installing hole 312 in described link body 31; Described bulge loop 32 inwalls are provided with draw-in groove 321; Form a card convex on described body 31; Described body 31 bottoms also are equipped with a glued membrane 34 that can cover described air-vent 311.
Described shell fragment 42 middle parts are provided with a through hole 421; Described driving spring 41 tops are provided with the large limiting section of a diameter 411; These driving spring 41 ends are fixedly installed on described shell fragment 42, and the top end passes the installing hole 312 of described link body 31 and forms with link by limiting section 411 interferes.
Described closure 52 comprises a sealed seat 521 and takes shape in the inlay card section that is used for inlay card filter paper 51 522 on sealed seat 521, also is provided with locking part in this sealed seat 521.
When expiration peak flow velocity measuring device coordinated blowpipe 1 assembling, described link 3 was socketed on the port 20 of shell 2, and wherein, on link 3 bodies 31, the card convex of molding falls into the draw-in groove 201 of shell 2 port 20 places settings, and forms interference; Axis body 24 in shell 2 passes the installing hole 312 of through hole 421, driving spring 41 and the link 3 of described shell fragment 42, and fixing with described closure 5, wherein, also is provided with locking part in closure 5 in sealed seat 521 and firmly is buckled in axis body 24 tops.Described shell fragment 42 falls into the inner chamber of shell 2, and forms interference with described slide block 6, and slides on axis body 24.Described glued membrane 34 is fixed in described link 3 body 31 bottoms, and covers the air-vent 311 of link 3 body 31 bottoms.Filter paper 51 in described defecator 5 falls in the inlay card section of closure 52 and is fixed in the inlay card section of closure 52.Described blowpipe 1 is socketed in the bulge loop 32 of described link 3, wherein, the card convex 111 of the pipe body 11 side settings in blowpipe 1 falls into the draw-in groove 321 of described link 3 bulge loop 32 inwalls, and form to interfere, and assembling forms complete expiration peak flow velocity measuring device.
During use, user fits the blow gun 12 that surrounds in blowpipe 1 with lip, can not leak gas, and keep shell 2 to be horizontal level, and in addition, finger can not clog the through hole 421 of shell 2 bottoms.As possible gas is breathed out with the fastest at most speed within the shortest time.Driving device 4 starts, and the shell fragment 42 in driving device 4 forms with slide block 6 interferes, and slide block 6 is slided on the slide rail 21 on shell 2, writes down the scale numerical value 222 of slide rail 21 correspondences.In addition, in use for some time, change the filter paper 51 in expiration peak flow velocity measuring device, can reduce bacteria breed.
Certainly, the above is only specific embodiment of the utility model, be not to limit this utility model practical range, all equivalences of doing according to the described structure of this utility model claim, feature and principle change or modify, and all should be included in this utility model claim.
Claims (6)
1. the blowpipe of expiration peak flow velocity measuring device, comprise a blowpipe (1), it is characterized in that: described blowpipe (1) comprises that one is used for the pipe body (11) of installing and the blow gun (12) that takes shape in the ovalize on pipe body (11).
2. the blowpipe of expiration according to claim 1 peak flow velocity measuring device, it is characterized in that: the outward flange of described blow gun (12) port (120) is set to round and smooth curved edge (121).
3. the blowpipe of expiration according to claim 2 peak flow velocity measuring device, it is characterized in that: the area of section of described blow gun (12) port (120) is 225mm
2
4. the blowpipe of expiration according to claim 1 peak flow velocity measuring device, it is characterized in that: described pipe body (11) side is provided with one and is used for firm card convex (111) of installing.
5. the blowpipe of expiration according to claim 1 peak flow velocity measuring device, it is characterized in that: described blowpipe (1) has a cavity, this cavity comprises in the first rounded cavity of pipe body (11) and blow gun (12) that this first cavity is connected with the second cavity by the second cavity of elliptical gradient circular institute molding.
6. the blowpipe of according to claim 1-5 described expiration of any one peak flow velocity measuring devices, it is characterized in that: described blow gun (12) cross-sectional shape is hyperbola, and this blow gun (12) comprises first surface (122) and second curved surface (123) of two different curvature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220290544 CN202960513U (en) | 2012-06-15 | 2012-06-15 | Blowtorch for peak expiratory flow rate measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220290544 CN202960513U (en) | 2012-06-15 | 2012-06-15 | Blowtorch for peak expiratory flow rate measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202960513U true CN202960513U (en) | 2013-06-05 |
Family
ID=48501656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220290544 Expired - Fee Related CN202960513U (en) | 2012-06-15 | 2012-06-15 | Blowtorch for peak expiratory flow rate measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202960513U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104274178A (en) * | 2013-07-09 | 2015-01-14 | 深圳市龙岗区人民医院 | Disposable peak flow rate meter mouth |
| CN108245369A (en) * | 2016-12-29 | 2018-07-06 | 袁杰 | Blow gun and pulmonary secretions discharger |
| CN113440128A (en) * | 2021-05-21 | 2021-09-28 | 深圳融昕医疗科技有限公司 | Airflow velocity tester |
-
2012
- 2012-06-15 CN CN 201220290544 patent/CN202960513U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104274178A (en) * | 2013-07-09 | 2015-01-14 | 深圳市龙岗区人民医院 | Disposable peak flow rate meter mouth |
| CN108245369A (en) * | 2016-12-29 | 2018-07-06 | 袁杰 | Blow gun and pulmonary secretions discharger |
| CN113440128A (en) * | 2021-05-21 | 2021-09-28 | 深圳融昕医疗科技有限公司 | Airflow velocity tester |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Free format text: FORMER OWNER: ALTRUST PRECISION TOOLING CO., LTD. Effective date: 20150525 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C56 | Change in the name or address of the patentee |
Owner name: FIRST AFFILIATED HOSPITAL OF GUANGZHOU MEDICAL UNI Free format text: FORMER NAME: THE SECOND AFFILIATED HOSPITAL OF GUANGZHOU MEDICAL SCHOOL |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 510120 GUANGZHOU, GUANGDONG PROVINCE TO: 510000 GUANGZHOU, GUANGDONG PROVINCE |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 510000 No. 151 middle Yanjiang Road, Guangzhou, Guangdong, Yuexiu District Patentee after: THE FIRST AFFILIATED HOSPITAL OF GUANGZHOU MEDICAL University Address before: 510000 No. 151 middle Yanjiang Road, Guangzhou, Guangdong, Yuexiu District Patentee before: THE FIRST AFFILIATED HOSPITAL OF GUANGZHOU MEDICAL University |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20150525 Address after: 510000 No. 151 middle Yanjiang Road, Guangzhou, Guangdong, Yuexiu District Patentee after: THE FIRST AFFILIATED HOSPITAL OF GUANGZHOU MEDICAL University Address before: 510120 No. 151 middle Yanjiang Road, Guangzhou, Guangdong, Yuexiu District Patentee before: THE FIRST AFFILIATED HOSPITAL OF GUANGZHOU MEDICAL University Patentee before: ALTRUST PRECISION TOOLING Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20150615 |
|
| EXPY | Termination of patent right or utility model |